re PR tree-optimization/50955 (IVopts incorrectly rewrite the address of a global memory access into a local form.)

2012-02-06  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/50955
	* tree-ssa-loop-ivopts.c (get_computation_cost_at): Artificially
	raise cost of expressions that replace an address with an
	expression based on a different pointer.

From-SVN: r183934